Lord Nibbo
Established Member
Fed up of having to remove the riving knife every time I wanted to use my tenoning jig I decided to cut the knife off just below the level of the blade. But the riving knife holds the guard in place and the guard is also designed to suck up any stray sawdust above the table, not that the suction was any good anyway 
So I decided to do something about it, here's what I done.
I cut of the riving knife just below the blade height and added this frame to hold the guard.
In raised position. If I need clearance for using my tenoning jig it really easy to remove one bolt in the struts of the frame and swing the cover out of the way. This pic shows how high it will lift without removing the bolt.
While I was at it I thought about the rubbish suction that the guard/cover generates so using a small piece of plastic cut from an old white spirit bottle is pushed into the pipe end to create a ventury effect. It works but I'm going to experiment with different sizes to see what is best to add suction to the blade cover.
I also added a zero clearance kerf slot.
Finally I though I'd stop any dust blowing around the workshop by filling the gaps between the feet on the base.
So using just some scrap MDF I did this.
No fixings they just sit on the floor.
I got the box tube and flat bar out of an offcuts bin at a local farm engineering company, cost £5 The pipe is from an old knackered Dyson The paint I already had, I probably used about half a can so that cost was about £3 plus £2.50 for the gate spring so in all I've spent about £10.50p
This morning I added these two shelves.
So I decided to do something about it, here's what I done.I cut of the riving knife just below the blade height and added this frame to hold the guard.
In raised position. If I need clearance for using my tenoning jig it really easy to remove one bolt in the struts of the frame and swing the cover out of the way. This pic shows how high it will lift without removing the bolt.
While I was at it I thought about the rubbish suction that the guard/cover generates so using a small piece of plastic cut from an old white spirit bottle is pushed into the pipe end to create a ventury effect. It works but I'm going to experiment with different sizes to see what is best to add suction to the blade cover.
I also added a zero clearance kerf slot.
Finally I though I'd stop any dust blowing around the workshop by filling the gaps between the feet on the base.
So using just some scrap MDF I did this.
No fixings they just sit on the floor.
I got the box tube and flat bar out of an offcuts bin at a local farm engineering company, cost £5
The pipe is from an old knackered Dyson The paint I already had, I probably used about half a can so that cost was about £3 plus £2.50 for the gate spring so in all I've spent about £10.50p This morning I added these two shelves.
